Categories
vol-31MICROBIAL ASSESSMENT OF EL- MAX FISH FARM
GEHAN M. ABO-ELELA, NERMEEN A. ELSERSY*, ELSHENAWY M.,
ABDEL- MAWLA, E.
National Institute of Oceanography and Fisheries, Microbiology laboratory,
Kyed Bay, Anfoushy, Alexandria, Egypt.
Keywords: Vibriosis- Fish Farm – E.coli- Streptococcus faecalis
ABSTRACT
El-Max fish farm is one of the most important natural fish farm in Alexandria
which is suffering from die-off of large amounts of fish. Facing this problem we
must deal with the estimation of the quality of the farm raring unit environment
(ponds). Analysis of samples using the Bray – Curtis similarity coefficient test
yielded that, the input and El-Khandac were similar at (97%), while the eight
ponds were classified at different level of similarity as follows: pond1 (B1) and
pond7 (B7) were similar at (86%), B2 and B3 were similar at (90%), B14, B10
and B9 were similar at (93%), where as B11 is singly separated at (83%).
Moreover, results indicate that distribution of the different bacterial groups was
affected with one or more chemical parameters such as ammonia, nitrates,
phosphates and alkalinity. Since the similarity between ponds was high, we can
consider them all as a unique environment from the physicochemical and
microbiological point of view.
